The biomass of a community is the weight of the
a. material decomposed in a year.
b. producers.
c. living organisms.
d. consumers.
e. decomposers.
C
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The natural habitat of L. pneumophila is:
a. freshwater streams. b. the upper respiratory tract of humans and animals. c. the large intestine of humans and animals. d. foods contaminated by soil.
An embryo sporophyte surrounded by nutritive tissue and a tough, protective outer coating makes up a(n) ____
a. pollen grain b. spore c. ovule d. seed e. strobilus
Long-lasting pesticides such as DDT
a. are target-specific. b. are the most effective control over pests. c. build up in concentration as they pass up a food chain. d. break down after the organism that receives the pesticide dies. e. do all of these.
?
In the image above, the substance indicated as C is a(n) _____.
A. inhibitor B. regulatory molecule C. substrate D. coenzyme E. cofactor